In “Kings of Beer” — directed by Sean Mullin (“Amira & Sam,” the winner of SLIFF’s 2014 New Filmmakers Forum) — a diverse group of elite brewmasters from 65 breweries and 23 countries battle it out in an intense competition to brew the world’s most iconic American lager: Budweiser. The brewmaster who can brew the best, most consistent Budweiser over a 12-month period will bring home the Global Brewmaster Cup. Judged by an illustrious group of experts who are sequestered deep within the historic walls of the most renowned room in the brewing world — Room 220 — most of these “key tasters” have decades of experience, which has trained their palates to pick up the most minute of flavor flaws. The tasters in this fabled room are responsible for ensuring the standard of more than one-quarter of the world’s beer, with Budweiser the gold standard of consistency by which all the other beers are judged. In a competition usually decided by no more than a hundredth of a point, even the slightest misstep can cost a brewmaster the coveted Cup. Despite the hardship and uncertainty, one thing is clear: Kings aren’t born, they’re brewed.